🔐 nanomachine is a state machine for tiny JS
yarn add @thadeu/nanomachineor
npm i @thadeu/nanomachineor unpkg load script
<script src="https://unpkg.com/@thadeu/nanomachine"></script>const machine = nanomachine({
initial: 'login',
transitions: [
{ name: 'login', from: '*', to: 'login' },
{ name: 'waiting', from: ['login', 'unpause'], to: 'waiting' },
{ name: 'pause', from: ['waiting'], to: 'pause' },
{ name: 'unpause', from: ['pause'], to: 'waiting' },
],
events: {
login: () => null,
waiting: () => null,
pause: () => null,
unpause: () => null,
},
})With a state machine started, you have access to dynamically created methods. Like for example.
If you want to leave login and go to waiting, you can use.
// state is login, right?
machine.waiting()Everything is based on the transition from to to was configured
{ name: 'waiting', from: ['login', 'unpause'], to: 'waiting' }In the case above, we say, waiting, you can transition from login or pause to waiting
Of course, it will only happen, if there is a method created in events.
The above transition must have a method to be triggered when moving, example:
const machine = nanomachine({
......
events: {
waiting: () => console.log('fired waiting')
}
......
})The waiting event, will be invoked whenever the transition is approved in the state machine
Imagine the following situation, you need to change state, only after resolving something. So!
const machine = nanomachine({
......
transitions: [
{ name: 'login', from: '*', to: 'login' },
{ name: 'waiting', from: ['login', 'unpause'], to: 'waiting', if: () => true | false },
],
......
})or use unless.
{ name: 'waiting', from: ['login', 'unpause'], to: 'waiting', unless: () => true }You can use observers, for example
const machine = nanomachine({
....
})
machine.on('waiting', function() {
console.log('onWaiting')
})Whenever a waiting transitions occurs, this observer receives a message
Once you've made your great commits (include tests, please):
- Fork this repository
- Create a topic branch -
git checkout -b my_branch - Push to your branch -
git push origin my_branch - Create a pull request
That's it!
Please respect the indentation rules and code style. And use 2 spaces, not tabs. And don't touch the version thing or distribution files; this will be made when a new version is going to be released.
(The MIT License)
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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